Home / 231,039.08-318,802.44-129,051.56

Finding the Fourth Proportional to 231,039.08, 318,802.44 and 129,051.56

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Solution

The fourth proportional to 231,039.08, 318,802.44 and 129,051.56 is: 178,073.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,039.08 : 318,802.44 = 129,051.56 : x
  2. Step 2: Convert to fraction form
    231,039.08/318,802.44 = 129,051.56/x
  3. Step 3: Cross multiply
    231,039.08x = 318,802.44 × 129,051.56
  4. Step 4: Simplify right side
    231,039.08x = 41,141,952,213.81
  5. Step 5: Solve for x
    x = 41,141,952,213.81/231,039.08
  6. Step 6: Final answer
    x = 178,073.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.